Resonance methods of electric power transmission
More than one hundred seven years ago Nikola Tesla published the results of his
experiments on the resonance method of electric power transmission. Resonance methods of electric power transmission were found useful for high frequencies in radio engineering and communication engineering and they are also used on low frequencies in electrothermics. This third method can interfere in the competition between systems of electric power transfer using direct and alternating current:
the resonance waveguide method of electric power transmission on heightened frequency, which was proposed by Tesla in 1897 for the first time.
Current in cylindrical waveguides is closed in the form of displacement currents flowing along the waveguide's axis; and current in the single waveguide is closed in the form of displacement currents in the environment around the conductor. In connection with the presence of a phase difference between, waves of current and voltage, surface charges appear on the surface of the single opened conductor. They create coulomb exciting electric fields and these fields lead to the occurrence of coulomb currents in the conductor. Thus, a potential electric field is generated in the conductor, which provides for charges transfer and current in the conductor. The described processes have an electrostatic nature and are accompanied by small losses in the conductor.
Single wire electric power with Earth return
Renewable-based electric grids are increasingly being viewed as an attractive alternative for providing power to rural communities. Technology options include small hydropower, biomass-powered generators, small geothermal, PV, solarthermal, wind turbines and hybrid systems with back-up diesel generator, which may be connected to the social utility. Implementation of renewable-based technologies for rural electrification would contribute to the social and economic growth of the rural communities and would serve sustainable progress of the remote regions.
Tesla's U.S. Patent No. 593,138 titled "Electrical Transformer"
The electric grid faces specific problems of non-efficient operations, including transmission losses and the high cost of grid extension in remote sparsely populated areas. For example off-shore wind turbine, micro-hydro or geothermal generator are often located far from consumer and requires costly installation of long distance transmission line which usually has from 6% to 10% electric losses.
The principle of single wire electric power system's operation is based on the fact, that in no load operation mode the active current and the magnetic field of the line are equal to zero, while the electric field has maximum value and it is created by reactive displacement current which is charging the capacitance of the line. it is well known, that the displacement current is not affected by Ohm's law and Joule's law, that is why Joule (resistance) losses are equal to zero.
1. S. Avramenko. The method for electric power transmission and device for its realization. Russian Pat #210649 from 11.04.1995." Published in Patent Bulletin* m from 10.04.98.
2. S. Avramenko et al. Apparatus and method for single Sine electrical transmission. 3. European Patent # 0639301. Priority claimed 08.05.92 (Russia). Published in European Patent Bulletin 97/36 of 03.09.97